--- /dev/null
+<?php
+
+/**
+ * @file
+ * Theme functions for the media_entity module.
+ */
+
+use Drupal\Core\Render\Element;
+use Drupal\Core\Link;
+use Drupal\Component\Utility\Html;
+
+/**
+ * Prepares variables for list of available media bundles.
+ *
+ * Default template: media-add-list.html.twig.
+ *
+ * @param array $variables
+ * An associative array containing:
+ * - content: An array of content types.
+ */
+function template_preprocess_media_add_list(&$variables) {
+ $variables['bundles'] = [];
+ if (!empty($variables['content'])) {
+ foreach ($variables['content'] as $bundle) {
+ /** @var \Drupal\media_entity\MediaBundleInterface $bundle */
+ $variables['bundles'][$bundle->id()] = [
+ 'type' => $bundle->id(),
+ 'add_link' => Link::createFromRoute($bundle->label(), 'media.add', ['media_bundle' => $bundle->id()]),
+ 'description' => [
+ '#markup' => $bundle->getDescription(),
+ ],
+ ];
+ }
+ }
+}
+
+/**
+ * Prepares variables for media templates.
+ *
+ * Default template: media.html.twig.
+ *
+ * @param array $variables
+ * An associative array containing:
+ * - media: An individual media for display.
+ */
+function template_preprocess_media(&$variables) {
+ /** @var \Drupal\media_entity\MediaInterface $media */
+ $media = $variables['elements']['#media'];
+
+ $variables['name'] = $media->label();
+
+ // Helpful $content variable for templates.
+ foreach (Element::children($variables['elements']) as $key) {
+ $variables['content'][$key] = $variables['elements'][$key];
+ }
+
+ $variables['attributes']['class'][] = 'media';
+ $variables['attributes']['class'][] = Html::getClass('media-' . $media->bundle());
+ if (!$media->isPublished()) {
+ $variables['attributes']['class'][] = 'unpublished';
+ }
+ if ($variables['elements']['#view_mode']) {
+ $variables['attributes']['class'][] = Html::getClass('view-mode-' . $variables['elements']['#view_mode']);
+ }
+}